hmm i fixed this error once when i was checking for eMMC read only error just try this maybe it fixes

sudo gainroot
umount /dev/mmcblk0p1/
fsck -a /dev/mmcblk0p1/ (enter this code three or four times)
mount /dev/mmcblk0p1/


okay i don't give you a warranty but when i download from torrent movies or videos sometimes it crashes and device gets errors so i do this and after then my videos started to play happened this error with videos few months ago hope it will help